Carbureter for explosion-motors.



No. 731,547. PATENTED JUNE-'23, 1903. J. 00mm, P. DUPFAU & P. BARATHIE. GARBURETBR FOR EXPLOSION MOTORS.

APPLICATION FILED MARIJPM 1903.

2 SHEETS-SHEET .1.-

N0 MODEL.

WFIN :ssas

A-rro Rue/s No. 731,547. PATENTED JUNE 23, 1903. J. GORNE, P.- DUFPAU & P. BARATHIE i. GARBURETER FOR EXPLOSION MOTORS.

APPLIUATION IILB D MAR- 3', 1903.

' 1&0 MODEL. 2 SHEETS-SHEET 2.

lNv'aNTORE:

WlTNa.ss as jm mw. W

ATTORN BYE Patented June 23, 1903.

FFI (1E1,

ATENT JEAN CORNE, PIERRE DUFFAU, AND PIERRE BARATI-IIE, OF VILLENEUVE- SUR-LOT, FRANCE.

CARBURETER FOR EXPLOSION-MOTORS.

SPECIFICATION forming part of Letters Patent No. 731,547, dated June 23, 1908. Application filed March 3,1903. Serial No. 145,982. ct) model.)

To all whom it may concern:

DUFFAU, and PIERRE BARATHIE, citizens of the Republic of France, and residents of Vil- 5 leneuve-sur-Lot, Lot-et-Garonne, in the Republic of France, have invented certain new 7 and useful Improvements in Carbureters for Explosion-Motors, of which the following is a specification.

This invention relates to a carbureter for explosion-motors in which the carbureting operation is rendered uniform by regulating the quantity of spirit introduced while the motor is working and is intended to provide means for insuring such regulation.

In the accompanying drawings one form of" a carbureter constructed in accordance with this invention is illustrated.

Figure 1 isavertical section; Fig. 2, a plan;

Fig. 3, a side elevation, and Fig. 4 a horizontal section along the line 3 4 in Fig. 1.

.The apparatus comprises a mixing or carbureting chamber a, a distribution-chamber b, which can be raised or lowered at any moment, as subsequently clescribed,-a distribution-valve c for the spirit, a lever d for opening the valve 0, a camf, operated by the motor and acting on the lever d, a register 9 for regulating the admissionof air, and a screwcap and wheel '0, regulating the position of the distribution-chamber.

The bottom of the mixing-chamber a communicates, through a tubular connection j, with the motor suction apparatus. Above the mixing-chamber a is a vertical tubular extension 70, which has an external screwthread and is slotted on one side through its whole length. Around this tubular extension holes 0 are formed in the top of the chamber a for the admission of air. Over these holes the register g is arranged, and consists of a perforated disk, whichcan be turned so as to close the air-holes Q to a certain extent and is fixed in position by a screw m, which engages in a slot n, formed in the register. Finally the chamber a is cast in one piece with a vertical plate or bracket .2, which serves for fixingthe carburetor onto a support of any kind, and it is provided with lugs 19 for the pivotal connection of the operating-lever cl, one arm I of which enters the said chamber, the other Be it known that we, JEAN CoRNE, PIERRE 1 arm projecting therefrom.

The distribution-chamber is formed by a cylinder '1) cast in one piece with a tubular part 1' for admitting the spirit and is closed at the top by a plug 8. v

The valve 0 is located in the chamber Z2 and held against its seat by a spiral spring Z.

The chamber 1) is arranged in the tubular extension 70 of the mixing-chamber, its tubu- 6o lar attachment r being placed in the vertical groove of the said extension 7a.

A powerful spiral spring q is coiled around the chamber 1) and bearing at opposite ends on an internal shoulder of the extension, and an external shoulder 00 on the chamber Z1 constantly tends to keep the chamber b raised. Finally a perforated wheel o is formed integral with an internally-screw-threaded cap, which surrounds the distribution-chamber b and screws onto the tubular extension Jo.

The cap bears upon the shoulder a: of the distribution-chamber b, and in proportion as the wheel is turned to screw down the cap the chamber 1) is lowered and compresses the spring q. If the Wheel be turned to unscrew the cap, the spring raises the chamber Z). In these movements the tubularfeed-piece r in the distribution-chamber is displaced in the vertical slot formed inthe tubular part It.

Thewheel is retained in its difierent positions by means of a pin, which engages in a stationary hole and in one of the holes y, formed in the circumference of the said wheel.

.The unscrewing of the wheel under the action of vibration is thus prevented, as is consequently any irregularity.

The action of the carbureter is as follows: The tubular feed-piece 'r of the distributionchamber being connected to a spirit-reservoir with a constant level at each suction-stroke of the motor the cam f acts on the valve-lever 01 and forces it to turn on its pivot. In this movement the inner arm of the lever raises the valvec and a certain quantity of spirit enters the mixing-chamber in the form of spray. At the same time the suction action of the motor causes the "admission into this same chamber through the holes 0 of a quantity of air regulated once for all by too means of the register. The mixture is rendered complete and is conveyed to the motor.

In order to regulate the carbureting operation while the motor is acting according to the speed of the latter and the various circumstances, all that is necessary is to raise or lower the Valve 0 and valve-chamber to a certain extent, so as to change the stroke of this valve, and consequently to enable a smaller or greater quantity of spirit to enter the mixing-chamber. This is very easily effected by turning the wheel '0, whereby the chamber 17 is lowered, and consequently the tailpiece of the valve 0. It will be understood that as the cam f raises the inner arm of the lever d to the same height again each time this arm, which acts on the tailpiece of the valve, will raise the latter all the farther as its action begins at a lower point-that is to say, as the distribution-chamber b has been lowered by the action of the wheel 12. This carburetor, moreover, enables thespirit to be introduced at any moment of the stroke, particularly slightly before the opening of the motor admission-valve. For this purpose it is only necessary that the cam f, which acts on the lever 01, should be suitably mounted. Having now described our invention, what we claim as new, and desire to secure by Letters Patent, is

1. A carbureter for explosion-motors comprising a mixing or carbureting chamber a, holes 0 putting said chamber in communication with the outside, tubular parts j and made integral with said chamber, a distribution-chamber 1) arranged in the tubular part It so as to be capable of moving lengthwise, a coil-spring q arranged between an internal shoulder of the tubular part 7c and an external shoulder of the distribution-chamber l), a Wheel-nut U adapted to be screwed more or less on the tubular part 70 and which bears at the top against the shoulder as of the distribution-chamber, a valve 0 arranged in the distribution-chamber b and stopping the connection between said chamber and the mixingchamber a, a coil-spring Z which causes constantly the valve 0 to bear against its seat,

a lever d pivoted on the wall of the chamber a and provided with an arm extending below the tailpiece of the valve 0 and an external arm, and finally a cam f operated by the motor and acting on the lever d to raise the valve 0 from its seat, substantially as and for the purpose set forth.

2. A carbureter for explosion-motors comprising a mixing or carbureting chamber a, holes 0 putting said chamber in communication with the outside, a register g movable on the holes 0, a screw m to fix in position said register, a tubular part j connecting the chamber a with the motor, a tubular part 70 made integral with the chamber a, provided with an external thread and slotted on one side through its whole length, a distributionchamber 17 arranged in the tubular part 76 so as to be capable of moving lengthwise, a tubular part 7' made integral with the chamber 1) and arranged in the vertical tubular part 70, a coil-spring q arranged between an internal shoulder of the tubular part 70 and an external shoulder of the distribution-chamber b, a wheel-nut 1) adapted to be screwed more or less on the tubular part It and which bears at the top against the shoulder a: of thedistribution-chamber, a valve 0 arranged in the distribution-chamber b and stopping the connection between said chamber and the mixing-chamber a, a coil-spring Zwhich causes constantly the valve 0 to bear against its seat, a lever 01 pivoted on the wall of the chamber a and provided with an arm extending below the tailpiece of valve 0 and an external arm,

and finally a cam f operated by the motor and acting on the lever d to raise the valve 0 from its seat, substantially as and for the purpose set forth. Y

In witness whereof we have hereunto set our hands in the presence of two witnesses.

JEAN CORNE. PIERRE DUFFAU. I PIERRE BARATHIE.

Witnesses:

LOUIS J. TRICOT, E. K. TOURGEE. 

